Finding the Fourth Proportional to 80,857.72, 121,286.58 and 21,692.08
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Solution
The fourth proportional to 80,857.72, 121,286.58 and 21,692.08 is: 32,538.12
Step by Step Solution
- Step 1: Write the proportion equation
80,857.72 : 121,286.58 = 21,692.08 : x - Step 2: Convert to fraction form
80,857.72/121,286.58 = 21,692.08/x - Step 3: Cross multiply
80,857.72x = 121,286.58 × 21,692.08 - Step 4: Simplify right side
80,857.72x = 2,630,958,196.29 - Step 5: Solve for x
x = 2,630,958,196.29/80,857.72 - Step 6: Final answer
x = 32,538.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.